Lifter motion of spinning machines



Dec. 22, 1936. E K N ELLA ET AL LIFTER MOTION 0F SPINNING MACHINES FiledAug. 20, 1935 EDWARD KINSELLA CHARLES w ADDY Patented Dec. 22, 1936UNlTED STATES LIFTER MOTION OF SPINNING MACHINES Delaware ApplicationAugust 20, 1935, Serial No. 36,955

In Great Britain 10 Claims.

This invention relates to the lifter motion of spinning machines fortwisting or doubling yarns, such as ring-spinning, fiyer-spinning andcap-spinning machines.

In machines of this type the traversing of the yarn being spun uponbobbins or other yarn packages on which it is to be collected iseffected by means of a vertically reciprocated lifter rail on which aremounted either the packages on which the yarn is being wound or guidemeans for conducting the yarn to such packages. The vertical movementsof the lifter rail are derived from the movements of a.horizontally-reciprocated traverse rod extending the length of thelifter rail. Movement is transmitted from 'the traverse rod to thelifter rail by means of lifter rods depending from the lifter rail, andlifting chains attached to the bottom ends of the lifter rods, thechains passing over sprockets or flanged 0 wheels disposed at the levelof the traverse rod, and being attached to the traverse rod. Thetraverse rod is reciprocated horizontally by means of a cam-operatedlever connected at its upper end to the traverse rod by means of aconnecting rod. In order to adjust the length of traverse,

the position of the connection between the camoperated lever and theconnecting rod is altered, the pivot of the connecting rod fitting intoa slot in the end of the lever, and being adjusted to any desiredposition along the length of the slot.

This arrangement for the actuation of the traverse rod is liable tocertain disadvantages.

For example, the obliquity of the connecting rod.

gives rise to variations in traversing and to con- 35. sequent unevenlayering of the yarn on the packages. Since such obliquity varies inaccordance with the adjustments for the length of traverse, it isdifiicult or impossible to compensate for it by suitable adjustment ofthe contour of the cam. 40. Furthermore, precision in the adjustment forthe length of stroke is difficult. It is an object of the presentinvention to provide means for actuating the traverse rod of thespinning machine which shall be free from the above dis- 45. advantages.

According to the present invention, actuationof the traverse rod of aspinning machine is effected by means of a cam-operated lever rockingabout a pivot, the position of which withreference to the machine may beadjusted in the direction of the length of the lever in order to adjustthelength of traverse.

While the invention is applicable generally to yarn twisting anddoubling machines in which 5] thetraverse is derived'from thehorizontalmove- September 1'7, 1934 ments of a traverse rod, it is particularlyapplicable to machines in which the yarn is collected on flangedbobbins, the precise adjustment of the length of traverse being ofespecial importance in this case. Thus, the invention is particularlyapplicable to cap-spinning machines employed in the collection ofartificial yarns continuously with their production by the dry orevaporative method.

By way of example a cap-spinning machine provided with actuating meansaccording to the invention will now be described in greater detail withreference to the accompanying drawing, in which Figure l is a frontelevation of the machine,

Figures 2 and 3 are a side elevation partly in section and a frontelevation partly in section respectively of the actuating. means on alarger scale than Figure l, and

Fig. 4 is an enlarged sectional view of a detail of the machine taken onthe line 44 of Fig. 1.

Referring to Figure 1, the machine comprises a spindle rail I on whichare mounted a number of stationary spindles 2 secured to the spindlerail by means of collet mountings 3, as described, for example, in ourU. S. application S. No. 36,953 filed August 20, 1935 corresponding toBritish application No. 26635/34 filed 17th September 1934. .The spindlerail I is made in sections individually mounted upon the frames 4 of themachine. The caps 5 of the machine are mounted at the tops of thespindles 2, the spindles 2 passing through holes in a lifter rail 6disposed between the spindle rail I and the caps 5. Mounted in bearingsupon the lifter rail 6 and surrounding the spindles 2 are driving whirls8 driven in pairs by driving belts 9.

The lifter rail 6 is mounted on the upper end of a number of lifter rodsII which pass through holes I2 in the spindle rail and is caused to riseand fall by a horizontal motion of traverse rods I3, which are of thekind described in our U. S. application S. No. 36,956 filed Aug. 20,1935 corresponding to British application No 26637/34 filed 17thSeptember 1934. The lifter rods I I are connected to the traverse rodsI3 by means of chains I i secured to the lower ends I5 of the lifterrods II and to yokes I6 disposed between the traverse rods l3. Betweenthe yokes l6 and the lower ends I5 of the lifter rods II, the chains I4pass over sprockets I! mounted on the frame of the machine. The traverserods I3 are mounted, as is described in our U. S. application S. No.36,954, filedAugust 20, 1935 corresponding to British application No.26638/34 filed 17th September 1934, on quadrants l8 pivoted near thebase of the machine at E9, and connected by means of tapes 20 runningover the arcuate parts of the quadrants l8, and secured to the traverserods l3.

The mechanism according to the present invention for actuating thetraverse rods I3 is shown at the right-hand side of Figure 1, and ingreater detail in Figures 2 and 3. The machine may be divided into twoparts, and provided with two of such actuating means, one at each end,such means being preferably disposed to cause one half of the machine towork in opposition to the other. The actuating mechanism is in the formof a unit which may be applied as a whole to' an existing cap-spinningmachine.

The assembly comprises a frame 2! at the upper end of which arehorizontal slides 22 and a crosshead 23 sliding therein, the cross-headbeing adapted for attachment to the double traverse rod l3. At the lowerend of the frame 2| is a bell-crank lever 2d, to one arm of which arocking shoe 25 is pivoted at 26. The other arm 21 of the bell-cranklever is tapped at 28 to take a positioning screw 29, the end of whichbears against the frame 2l,.while a second screw 30, screwing into theframe of the actuating mechanism at 3i, bears against the arm 2'! ofthe: lever 24, the two screws 29, 30 preventing movement of thebell-crank lever Ed in either direction. To the pivot of the bell-cranklever there is attached an arm or pointer 32 which reads against a scale33 on the frame 2!, the end of the arm being marked with a Vernier scale34 for fine adjustment oi the position of the bell-crank lever 2 5 bymeans of the positioning screws 29, 30.

The operating lever 35, the lower half of which is of T section issecured at its upper end 36 to the horizontally-sliding cross-head 23,while the flange til forming a part of the T section at its lower endfits against and slides in contact with the pivoted shoe 25 providedwith flange 4| at 26 on the bell-crank lever 24. In the middle of thelever is a cam bowl 3! which is acted upon by a heart-shaped cam 38mounted on a shaft 39 in the frame 2! and rotated by any suitable means(not shown). The assembly of the machine is such that the lower end ofthe lever 35 is maintained in sliding contact with the shoe 25 pivotedat 28 on the bell-crank lever 24 by the force in the traverse rods 13,such force either being derived from the weight of the lifter rail 6 andthe parts 'l--IU carried thereby or from counter-balance means whichcompensate for such weight as described, for example, in our U. S.application S. No. 36,952 filed August 20, 1935 corresponding to Britishapplication No. 26636/34 filed 17th September 1934.

In the operation of the device, the upper end 35 of the lever 35 movesalong a horizontal line, being constrained by the slides 22 of thecrosshead 23 to which the lever is attached. The tension in the traverserods l3 in combination with the action of the operating cam 38 holds thelower end of the lever against the rocking shoe 25, and the cam 38, inrotation, forces the upper end 3% of the lever, and the cross-head 23 towhich it is attached to perform the desired horizontal movements. Thelower end of the lever 35 slides to a small extent during the operationof the machine against the pivoted shoe 25 on the bell-crank lever 24.The freedom of the lever 35 to slide in the pivoted shoe 25 permits theupper end of the lever 36 to be directly connect'ed to the traverse rodand to follow a horizontal linear movement. While this sliding causes aslight variation in the arm of the lever between its lower end and thecam bowl on which the cam acts, this variation may be compensated for bythe profile of the cam.

When adjustment of the length of traverse is desired, the position ofthe bell-crank lever 24 is altered by means of the two set screws 29, 30acting thereon, the shoe 25 sliding to a different point near the lowerend of the actuating level" 35 so as to alter the arm of the lever.Since adjustment is effected by varying the position of the pivot whichin the operation of the machine is substantially stationary, and cantherefore be made of solid construction, fine adjustment is more easilyobtainable. Moreover, by the use of a single lever, the difdcultiesarising from the obliquity of the connecting rod are overcome. The smallvariations in the arm of the lever during the operation of the machineremain the same, however, nothwithstanding the general alteration in theposition of the pivot with respect to the lever, and in consequence thecorrections made to the shape or" the cam 38 are effective whatever theposition of the bell-crank lever 24 and or the lower pivot of theoperating lever 35.

What we claim and desire to secure by Letters Patent is:

1. In a spinning machine comprising a longitudinally moving traverse rodfor efiecting a traversing motion, means for actuating said traverserod, comprising a lever directly secured at one end to said traverserod, a pivot for the other end of said lever, said lever being mountedto slide against said pivot during the traversing motion, cam means forrocking said lever about said pivot, and means for adjusting theposition of said pivot in the direction of the length of the lever inorder to adjust the length of traverse.

2. In a spinning machine comprising a longitudinally moving traverse rodfor effecting a traversing motion, means for actuating said traverserod, comprising a lever, a cross-head at one end of said lever, slidesfor said cross-head parallel to the motion of said traverse rod, saidcross-head being connected to said traverse rod and to one end of saidlever, a pivot for said lever at the other end thereof, cam means forrocking said lever about said pivot, and means for adjusting theposition of said pivot in the direction of the length of the lever inorder to adjust the length of traverse.

3. In a spinning machine comprising a longitudinally moving traverse rodfor effecting a traversing motion, means for actuating said traverserod, comprising a lever, a cross-head at one end of said lever, slidesfor said cross-head parallel to the motion of said traverse rod, saidcrosshead being connected to said traverse rod and to one end of saidlever, a shoe against which the other end of said lever is adapted toslide, a pivot for said shoe, cam means for rocking said lever aboutsaid pivot and means for adjusting the position of said pivot in thedirection of the length of the lever in order to adjust the length oftraverse.

4. In a spinning machine comprising a longitudinally moving traverse rodfor effecting a traversing motion, means for actuating said traverserod, comprising a lever, a bell-crank lever, a pivot for said firstlever on one arm of said bell-crank lever, cam means for rocking saidlever about said pivot, and means for adjusting the angular position ofsaid bell-crank lever so as to adjust the position of said pivot in thedirection of the length of said lever in order to adjust the length oftraverse.

5. In a spinning machine comprising a longitudinally moving traverse rodfor effecting a traversing motion, means for actuating said traverserod, comprising a lever, a bell-crank lever, a pivot for said firstlever on one arm of said bell-crank lever, cam means for rocking saidlever about said pivot, a screw fitting in the other arm of saidbell-crank lever and bearing against the frame of the machine, and asecond screw fitting into the frame of the machine and bearing againstsaid other arm of the bell-crank lever, said screws being adapted toadjust the angular position of said bell-crank lever so as to adjust theposition of said pivot in the direction of the length of said lever inorder to adjust the length of traverse.

6. In a spinning machine comprising a longitudinally moving traverse rodfor efiecting a traversing motion, means for actuating said traverserod, comprising a lever, a bell-crank lever, a pivot for said firstlever on one arm of said bell-crank lever, cam means for rocking saidlever about said pivot, a screw fitting in the other arm of saidbell-crank lever and bearing against the frame of the machine, a secondscrew fitting into the frame of the machine and bearing against saidother arm of the bell-crank lever, said screws being adapted to adjustthe angular position of said bell-crank lever so as to adjust theposition of said pivot in the direction of the length of said lever inorder to adjust the length of traverse, and a scale in connection withsaid pivot to facilitate the adjustment of the length of traverse to thedesired length.

7. In a spinning machine comprising a longitudinally moving traverse rodfor effecting a traversing motion, means for actuating said traverserod, comprising a lever, a bell-crank lever, a pivot for said firstlever on one arm of said bell-crank lever, cam means for rocking saidlever about said pivot, means for adjusting the angular position of saidbell-crank lever so as to adjust the position of said pivot in thedirection of the length of said lever in order to adjust the length oftraverse, a scale fitted to the frame of the machine and a scale fittedto said bellcrank lever, said scales constituting vernier means forfacilitating the adjustment of the length of traverse to the desiredlength.

8. In a spinning machine comprising a longitudinally moving traverse rodfor efiecting a traversing motion, means for actuating said traverserod, comprising a lever, a cross-head secured to one end of said leverand to said traverse rod, slides for said cross-head parallel to themotion of said traverse rod, a shoe against which the other end of saidlever is adapted to slide, a bellcrank lever, a pivot for said shoe onone arm of said bell-crank lever, a screw fitting into the other arm ofsaid bell-crank lever and bearing against the frame of the machine, asecond screw fitting into the frame of the machine and bearing againstsaid other arm of the bell-crank lever, said screws constituting meansfor adjusting the position of said pivot along the length of said firstlever so as to adjust the length of traverse, cam means for rocking saidlever about said pivot, a scale secured to the frame of the machine anda scale secured to said bell-crank lever, said scales constitutingvernier means for facilitating the adjustment of the length of traverseto the desired length.

9. A cap-spinning machine comprising a vertically reciprocating lifterbar, whirls mounted thereon for the reception of bobbins, alongitudinally moving traverse rod for eifecting a verticalreciprocating motion of said lifter rail and means for actuating saidtraverse rod, said means including a lever connected directly at one endto said traverse rod, a pivot for the other end of said lever, saidlever being mounted to slide against said pivot during the traversingmotion, cam means for rocking said lever about said pivot, and means foradjusting the position of said pivot in the direction of the length ofthe lever in order to adjust the length of traverse.

10. In a spinning machine comprising a longitudinally moving traverserod for eifecting a traversing motion, means for actuating said traverserod, comprising a lever directly connected at one end to said traverserod, a pivot for the other end of said lever, said lever being mountedto slide against said pivot during the traversing motion, a cam forrocking said lever about said pivot, a cam bowl mounted on said leverand adapted to be actuated by the cam, and means for adjusting theposition of said pivot in the direction of the length of said lever inorder to adjust the length of traverse.

EDWARD KINSELLA. CHARLES WESLEY ADDY.

